• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2003년도 추계학술발표회
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• pp.123-126
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• 2003

In the present paper, the analysis is on the safe navigation between ships moving each other in restricted waterways under the external force, such as wind or current The numerical simulation of manoeuvring motion was carried out to propose an appropriate safe speed and distance between ships, which is required to avoid marine disasters from the viewpoint of marine safety. From the inspection q this investigation, it indicates the following result In case of proximal navigation between ships under the wind and current, the low-speed vessel is potentially hazardous because the rudder force if low-speed vessel needed for steady-state course-keeping is not sufficient, compared to the high-speed vessel The manoeuvring characteristic based on this investigation will be very useful for keeping the safety of navigation from the practical point of ships design and traffic control in restricted waterways.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2006년도 추계학술발표회
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• pp.143-149
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• 2006

This paper is primarily focused on the safe navigation between overtaking and overtaken vesselsin restricted waterways under the external forces, such as wind and current. The maneuvering simulation between two ships was conducted to find an appropriate safe speed and distance, which is required to avoid collision. From the viewpoint of marine safety, a greater transversedistance between two ships is more needed for the smaller vessel. Regardless of external forces, the smaller vessel will get a greater effect of hydrodynamic forces than the higher one. In the case of close navigation between ships under the forces of wind and current, the vessel moving at a lower speed is potentially hazardous because the rudder force of the lower speed vessel is not sufficient for steady-state course-keeping, compared to that of the higher speed vessel.

• Journal of Mechanical Science and Technology
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• 제20권11호
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• pp.2002-2009
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• 2006

This paper is primarily focused on the safe navigation between overtaking and overtaken vessels in restricted waterways under the external forces, such as wind and current. The maneuvering simulation between two ships was conducted to find an appropriate safe speed and distance, which is required to avoid collision. From the viewpoint of marine safety, a greater transverse distance between two ships is more needed for the smaller vessel. Regardless of external forces, the smaller vessel will get a greater effect of hydrodynamic forces than the bigger one. In the case of close navigation between ships under the forces of wind and current, the vessel moving at a lower speed is potentially hazardous because the rudder force of the lower speed vessel is not sufficient for steady-state course-keeping, compared to that of the higher speed vessel.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.89-93
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• 2006

This paper is primarily focused on the safe navigation between overtaking and overtaken vessels in restricted waterways under the external forces, such as wind and current. The maneuvering simulation between two ships was conducted to find an appropriate safe speed and distance, which is required to avoid collision. From the viewpoint of marine safety, a greater transverse distance between two ships is more needed for the smaller vessel. Regardless of external forces, the smaller vessel will get a greater effect of hydrodynamic forces than the bigger one. In the case of close navigation between ships under the forces of wind and current, the vessel moving at a lower speed is potentially hazardous because the rudder force of the lower speed vessel is not sufficient for steady-state course-keeping, compared to that of the higher speed vessel.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2004년도 추계학술대회
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• pp.49-55
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• 2004

제한수역에서 선박조종시 선박간에 생기는 상호간섭력과 또한 이러한 선박들이 측벽으로부터 받는 간섭력은 항로설계 및 선박조종운동의 관점에서 보았을 때 대단히 중요한 문제이다. 이 논문에서는 측벽 부근을 항해하는 두 척의 대형선박에 미치는 측 벽의 간섭 영향에 대해서 다루었다. 이 논문의 목적은 협수로나 천수로와 같은 제한수로에서 근접하여 항해하는 선박들이 안전조종 운동을 할 수 있도록 상호 간섭력을 최소화 할 수 있는 선박의 속력 및 선박과 선박 및 측벽 상호간의 거리에 대한 계산을 행하고, 제한된 항로에서 안전하게 항해할 수 있는 기준을 마련하는데 있다.

• 한국항해항만학회지
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• 제29권1호
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• pp.17-22
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• 2005

제한수역에서 선박조종시 선박간에 생기는 상호간섭력과 또한 이러한 선박들이 측벽으로부터 받는 간섭력은 항로설계 및 선박조종 운동의 관점에서 보았을 때 대단히 중요한 문제이다. 이 논문에서는 측벽 부근을 항해하는 두 척의 대형선박에 미치는 측벽의 간섭 영향에 대해서 다루었다. 이 논문의 목적은 협수로나 천수로와 같은 제한수로에서 근접하여 항해하는 선박들이 안전조종운동을 할 수 있도록 상호 간섭력을 최소화 할 수 있는 선박의 속력 및 선박과 선박 및 측벽 상호간의 거리에 대한 계산을 행하고, 제한된 항로에서 안전하게 항해할 수 있는 기준을 마련하는데 있다.

• International Journal of Naval Architecture and Ocean Engineering
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• 제4권1호
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• pp.1-8
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• 2012

The hydrodynamic interaction between ship and bank can't be neglected when a vessel is app- roached toward the tip of a wedge-shaped bank in restricted waterways, such as in a harbor, near some fixed obstacles, or in a narrow channel. In this paper, the characteristic features of the hydrodynamic interaction acting on a slowly moving vessel in the proximity of a wedge-shaped bank are described and illustrated, and the effects of water depth and the spacing between ship and wedge-shaped bank are summarized and discussed based on the slender body theory. From the theoretical results, it indicated that the hydrodynamic interactions decrease as wedge-shaped bank of angle ${\beta}$ in-creases. For water depth to draft ratio less than about 2.0, the hydrodynamic interactions between ship and bank in-crease sharply as h/d decreases, regardless of the wedge-shaped bank of angle ${\beta}$. Also, for lateral separation more than about 0.2L between ship and wedge-shaped bank, it can be concluded that the bank effects decrease largely as the separation increases.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2007년도 추계학술대회 및 제23회 정기총회
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• pp.77-78
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• 2007

이 연구의 목적은 안전항행을 위하여 제한수역에서 바람 및 강조류하에 근접항행중인 두 대형선박에게 요구되어지는 두 선박간의 종방향, 횡방향 및 속도에 따른 안전항과거리에 대해서 검토, 고찰하고자 한다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2003년도 춘계공동학술대회논문집
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• pp.5-10
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• 2003

이 논문에서는 제한수역에서 항행하는 대형선박들간의 안전항해를 위하여, 해난사고 방지에 필요한 선박들간의 적절한 안전속력 및 거리를 확보하기 위하여, 두 선박간의 속도비, 선장비, 횡방향 거리 및 종방향 거리를 변수로 하여 조종운동에 관한 시뮬레이션을 행하였다. 이상의 수치 계산 결과는 대형선박들이 왕래가 빈번한 폭주해역에서의 해상교통안전의 측면에서 볼 때 상당히 유용할 것이다.

• 한국항해항만학회지
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• 제35권7호
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• pp.557-562
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• 2011

Shipwaves can have harmful effects on people who are using riverside and cause bank erosion, bank structures destruction in restricted waterways. The wave field near a vessel is consisted of a combination of a primary and secondary wave system in a shallow or restricted waterway. The water level depression(squat) and return current beside the hull are called the primary wave system. The secondary wave system, that is the wave height originates from a local disturbance point such as the bow of the ship. This study aims at investigating the characteristics of the wave field around a vessel in a restricted water in relation to navigation experimentally and theoretically. The return current and squat with a correction factor can be newly evaluated and the almost same high-sized wave heights take place on the whole waterway in a restricted water without regard to the distance from the sailing line.